Boiler.



F. ELIZONDO. BOILER.

APPLIOATION FILED r1111. 26, 1912.

a SHEETS-SHEET 1.

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WITNESSES Patented Apr. 8, 1915.

F. ELIZONDO.

BOILER. APPLICATION FILED T16R26, 1912.

Patented Apr. 8, 1913.

3 SHEETS-SHEET 2.

w I w S, A N I v INVEII T08 Fran cacazik'zondo,

WITNESSES P. ELIZONDO.

BOILER. APPLICATION FILED ran. 26,1912.-

Patented Apr.- 8, 1913.

3 SHEETS-SHEET 3.

. I W I W/T/VESSES ATTORMEKS 25 is represented in the accompanying drawu T- D STA n-RANcIscoELr'zonno, or MATANZAS, conn. 1

BOILER.

application filed February 26,1912, SeriaI NoJ 679,825 3 posure of rivets to the heat of'the'burningfuel in the fire box and thus reduce leakage to a minimum, to permit easy cleaning of the boiler, and to avoid incrustation;

For the purpose mentioned use is made of bottom Water chambers extending the length v of the boiler at the sides thereof, the water legs rising from the saidbottom chambers, a top of crescent shape inc'ross section and connected at its sides with the upper ends of the said Water legs, and transverse tubes connecting the Water legs with each other.

, A. practical embodimentof the invention lngs forming a partof this'specification, in

which similar characters of'reference indicate corresponding parts in all the views. Figure l is a longitudinal central section of the boiler; Fig. 2 is an enlarged cross'section of the fire box section of the boiler, the

section being on the line 2-2 of Fig. l; and Fig. 3 is an enlarged cross section of the boiler on the line 33 of Fig. 1.

The main section A of the boiler termi nates at the front end in a fire box section B and at the rear end in a smoke box C provided with the usual stack D and the bot tom connection D for engagement with the front saddle of the locomotive. The main section A and the fire box section- B are mounted on bottom chambers E and E ar: ranged at the sides of the boiler and supporting water legs F and F connected at their upper ends with the sides of a top or steam chamber G of crescent shape in cross section and supporting a steam dome H. The sections of the water legs F and F at the fire box section B of the boiler are different in construction from the water leg sections of the main section A of the boiler, and the said water leg section of. the fire box section B of the boiler is arranged as follows, special reference being bad to Figs. 1 and 2. From the bottom chambers E and Specification of Letters Patent.

P ten ed pr. 3,1513.

.E rise tubes I, I, connected at their upper ends with upper 'nected by nipples K with .a series of top chambers L and L connected. by nipples N, if with the sides TE i chambers J and J con- I of the steam chan1- ber G. The upper. chamber-Sula, and: L

are connected \v1t-h ach'gother .by trans- .verse pipes O' "inclined upwardly from the chambers L to" the chambers as pla nly ndicated in Fig. '2, to insure a proper circulation crane water from-the chambers L tothe chambers. L. 'A grate P is arranged in the bottom of. the fire box section between the bottoms oftliejbottom chambers E and E, and! the .fiontend'of "the fire box sectiori is closed by a' front Q for supply- V provided with firing doors 'ing' the firebox with fuel.

The water leg segitions of the main section A of the boilerfareformed of a series l and 3) connected at their lower ends y,

nipples S and S, with the bottom chambers E and 'E, and'the upper ends of the said chambersR andR" T and T with the sides o'fthe steam chamber Gr.- O'ppos'itely disposed chambers R and R are connected with each'other by transverse tubes Qinclined 'u1)vv ardlyfrom' the chambers "R to the chambers R i to insure, a rapid circulation of the Water from the chambers-R to the chambers it, it'being understood that the arrangement described a large number of "transversecirculating tubes 0 and OTare provided'to form a large heating surface forthe Water with a view to insure a rapid circulation of the water and a quick generation-of steam.

The-upper chambers J and J thefirebox section B are connectedat their rear ends with the first chambers it and R,- as ndicated in' Fi-gs. l and 2, so ,as,to insure a are connected by nipples circulationof' 'water between the chambers 'J, J and'the first chambers R and B.

By reference to Figs. 2 and 3 it will be noticed that the water leg F on one side of the boiler is higher than the Water leg F on the other side of the boiler, and consequently I the tubesO and O can be readily inclined in the manner described and for the purpose stated. g

The main section A of'the holler is pro vided with a bottom U of fire brick or other" suitable material, supported on transverse plates or bars U carried by angle irons U U of which the angle irons U are shown attached to the inner side of the bottom chamber E, while the angle irons U are attached to the inner sides of the chambers R. A normally-closed cleaning out hole V is arranged in the bottom U for cleaning the main section A of the boiler of soot, whenever it is deemed necessary.

' A ba'ftle W is arranged underneath the steam compartment G at the junction of the main section A and the fire box section B (see dotted lines in Fig. 1). Handhcles X are provided on the chambers L and L and R, R opposite the ends of the tubes 0 and O to permit of gaining access to the said .mum as no rivets are exposed to the high heat of the burning fuel in the fire box. By insuring a rapid circulation of the water, incrust-ation is reduced to a minimum;

Having thus described my invention, I claim as new and desire to secure by Letters Patent: V

1. A boiler, comprising bottom water chambers extending the length of the boiler at the sides thereof, water legs rising from the said bottom chambers, a top of crescent shape in cross section and connected'at its sides with the upper ends of the said water legs, and transverse tubes connecting the water legs with each other.

2. A boiler, comprising bottom water chambers extending the length of the boiler at the sides thereof, water legsrising from the said bottom chambers and one being higher than the other, transverse tubes connecting the said water legs with each other, the tubes being inclined upwardly from the lower water leg to the higher water leg, and a top of crescent shape in cross section and connected at its sides with the upper ends of the said water legs.

3. A boiler, comprising bottom I water chambers extending the length of the boiler at the sides thereof, water legs rising-from the said bottom chambers andeachmade in two sections, of which one is the-fire to; section and theother the mainsectijon;

fire box section of each waterlo h-ttiiang vertical tubes connectedat their lower ends with the said bottom chamber, an upper chamberconnccted with the tops of the said tubes, and a series of top chambers connected with the said upper chamber, and the said main water le section being formed of and connected at its sides with the said top chambers of the water leg section of the fire box and with the upper ends of the said main. water leg sections, a.series of transverse tubes connecting the said top chambers of the water leg sections of the fire box, and a series of transverse tubes connecting the main water leg sections with each other.

4. A boiler, comprising bottom water chambers extending the length of the boiler at the sides thereof, water legs rising from the said bottom chambers and each made in two sections of which one is the fire box section and the other the main section, the fire box section of each water leg havin vertical tubes connected at their lower enc s with the said bottom chamber, an upper chamber connected with the tops of the said tubes and a series of top chambers connected with the said upper chamber, and the said main water leg section being formed of a series of vertical chambers connected at their lower ends with the said bottom chamber, a top of crescent shape in cross section and connected at its sides with the main top chambers of the water leg section of the fire box and with the upper ends of the said main water leg sections, a series of trans: verse tubes connecting the said top chambers of the water leg sections of the tire box, and a series of transverse tubes connecting the main water leg sections with eaclrother the water legs being higher at one side of the boiler than on theother side and the said transverse tubes being inclined upwardly from the lower water leg to the chambers extending the length of the boiler at the sides thereof, Water legs rising from the said bottom chambers and each made of two sections of which one is the fire box section and the other the main section, the fire box section of each water leg having vertichl tubes connected at their lower ends with the said bottom chamber, an upper chamber connected with the tops of the said tubes, and a series of top chambers connected with the said upper chamber, and the said main water leg section being formed of a series "of vertical chambers connected at their lower ends with the said bottom chambeiy a' top of crescent shape in cross section and connected at its sides with the said top chambers of the water leg section of the fire box and with the upper ends of the said main Water leg sections, a series of transverse tubes connecting the said top ch ambcrs of the water leg sections of the fire box, a series of transverse tubes connecting the main water leg sections with each othpr, a

l grate in the bottom of the firebox section,

a series of vertica chambers connected at a front on the fire box section, a'bottom theirlower ends w th the said bottom chamunder the said main. section, and a smoke ber, ,a top of crescent shape in cross section box at the rcarend of the main section.

6. In a boiler, av steam chamber at the top her, and transverse tubes connecting the of the boiler, water chambers at the bottom uppermost water chambers. of the boiler end extending the length of In testimony whereof, I have signed my the boiler at the sides thereof, Water legs name to this specification in the presence of 5 iormed of tlibiS rising fromghe Wltfil? challntwo subscribing witnesses.

ers, Water 0 an). ers at t e si es of tie boiler with which the upper ends of the FRANCISCO ELIZONDO tubes connect, water chambers above the \Nitnesses: second chambers and connected with the D. M. Menu, 10 snid second chambers and the steam chem J'Umo Sr AT; 

